The biggest risk you didnt mention is this. Yes O'Neals contract is up in 2 years and we will have a tonne of space when it is, so we could easily replace him. BUT (yes a big butt, like j-lo), if this experient doesnt work out, Bosh may just head for greener pastures, not wanting to go thru another experiment. So the risk is not just losing O'Neal to injury, but losing our "franchise" player.

Fair enough, but in defense of this being not that risky, do you really think keeping TJ and Rasho or making the "safe" trade (Diaw or the Portland deal. Both of which sucked) would be any more appealing to Bosh?

This has a better chance of working out than any other possible scenario. The risk is almost entirely to do with Jermaine's health. Even if he plays poorly, they're going to get more out of him than they could have possibly gotten out of Ford and Nesterovic.